3 years ago

What is the area of the triangle?

Mathematics

2 answers:

garri49 [273]3 years ago

7 0

40 right? Because base times height divided by two is area of a triangle

yawa3891 [41]3 years ago

3 0

Answer:

Step-by-step explanation:

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In a chemistry class, 12 L of a 12% alcohol solution must be mixed with a 20% solution to get a 14% solution. How many liters of

tigry1 [53]

Let x = liters 20% solution to be added
then

.12(12) + .20x = .14(12+x)
.12(12) + .20x = .14(12+x)
1.44 + .20x = 1.68 + .14x
.20x = .24 + .14x
.06x = .24
x = 4 liters

Hope this helped!!

3 0

3 years ago

Pls help with Question 11. I need to submit it by tmr

Wewaii [24]

Answer: 81.85 km/hr

Converting m/sec into km/hr, 25 m/sec = 90 km/hr

Average =

Time = 50/90 = 5/9 hr

next 120 km at an average speed of 80km/h

=> Time = 120/80 = 3/2 hr

last part of its journey at an average speed of 90km/h in 35 Minutes

time = 35 minutes = 35/60 hr = 7/12 hr

Distance covered = 90 * 7 /12 = 105/2 km

Total Distance = 50 + 120 + 105/2 = 435/2 km

Total time = 5/9 + 3/2 + 7/12 = ( 20 + 54 + 21) /36 = 95/36

Average speed = (435/2)/(95 /36) = 432 * 18 /95 = 81.85 km/hr

8 0

3 years ago

Select the statement below that correctly describes the relationship between the number of workers and the hours that they work.

oee [108]

Less workers = more hours

OR the answer might be worded as

More workers = less hours

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2 years ago

(3t + 7)−2(6.3t + 4) * 15.6t − 1 15.6t + 15 −9.6t + 15 −9.6t - 1

vodka [1.7K]

Answer:the anser is -9.6t-1

Step-by-step explanation:

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3 years ago

Helppppppppppp!!!!!

Delvig [45]

Answer:

$n ^{2} + 7n + 1 \\ where \: the \: value \: of \: n = - 3 \\ n ^{2} + 7n + 1 \\ = - 3^{2} + 7( - 3) + 1 \\ = - 9 - 21 + 1 \\ = - 29$

4 0

3 years ago

Read 2 more answers